Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Mitrofan M. Choban"'
Autor:
Mitrofan M Choban, Vasile Berinde
Publikováno v:
Applied General Topology, Vol 18, Iss 2, Pp 317-330 (2017)
We introduce and study a general concept of multiple fixed point for mappings defined on partially ordered distance spaces in the presence of a contraction type condition and appropriate monotonicity properties. This notion and the obtained results c
Externí odkaz:
https://doaj.org/article/2f07ccce2eac4f2c8f7c026242f84c9d
Publikováno v:
Carpathian Journal of Mathematics. 38:95-116
The paper is concerned with a qualitative analysis for a nonlinear second-order boundary value problem, endowed with nonlinear and inhomogeneous dynamic boundary conditions, extending the types of bounday conditions already studied. Under certain ass
Autor:
Mitrofan M. Choban
Publikováno v:
Carpathian Journal of Mathematics. 36:241-257
In the present article we study the geometrical configuration ofb-perturbation of the norm of the normed space.The notion ofb-metric is important in the solving of the fixed point problem.
Publikováno v:
Topology and its Applications. 263:209-220
In this paper, a collection of completeness type properties of topological spaces is introduced. They are determined by families of open covers. It is shown that some of the completeness type properties imply isocompactness, and that some of them are
Autor:
Larisa M. Sali, Mitrofan M. Choban
Publikováno v:
Creative Mathematics and Informatics. 28:53-59
In this paper, we study polynomial functional equations of the form af(p(x)) + bf(q(x)) = g(x), where p(x), q(x) are given polynomials and g(x) is a given function. Theorems 21 and 22 contain sufficient conditions under which the functional equation
Publikováno v:
Topology and its Applications. 241:82-88
If G is a dense subgroup of a topological group B, then the subspace X = B ∖ G is called a group-remainder, or a g-remainder, for short, of the topological group G, and B is said to be a group-extension of G. In this paper, g-remainders of topologi
Publikováno v:
Topology and its Applications. 227:51-58
A space X belongs to the class A if for any closed subspace Y of X the network weight n w ( Y ) is equal to the weight w ( Y ) of Y . One of the main results of the present article affirms that b X ∖ X ∈ A for any compactification bX of the parac
Autor:
Mitrofan M. Choban
Publikováno v:
Topology and its Applications. 221:144-155
In the present article four problems from the A.V. Arhangel'skii and M.G. Tkachenko's book [8] are examined. Theorem 2.5 affirms that for any uncountable cardinal τ there exists a zero-dimensional hereditarily paracompact non-metrizable Abelian topo
Autor:
Mitrofan M. Choban, Vasile Berinde
Publikováno v:
Carpathian Journal of Mathematics. 33:169-180
Two open problems in the fixed point theory of quasi metric spaces posed in [Berinde, V. and Choban, M. M., Generalized distances and their associate metrics. Impact on fixed point theory, Creat. Math. Inform., 22 (2013), No. 1, 23–32] are consider